<?php
class My_View_Helper_Cmumbral extends Zend_View_Helper_Abstract
 {
       
        public function cmumbral($data)
        {


            if($data['uso'] > $data['umbral']){
                return 'yellow';
            }elseif($data['uso'] > 0) {
                return 'green';
            }
            
            
        }   
}